如何在cmake库中包含libcurl [英] How to include libcurl in cmake library

问题描述

我正在创建一个将libcurl作为依赖项的cpp库.我希望用户在他们的计算机上提供libcurl的路径.最好的方法是什么?

I am creating a cpp library that has libcurl as a dependency. I would like for the user to supply the path to libcurl on their computer. What is the best way to do this?

为澄清起见，我在Windows上制作了该库，但我希望它是跨平台的

To clarify, I am making the library on windows, but I would like for it to be cross-platform

推荐答案

根据您的描述，您必须将调用路径添加到cmake在试图通过调用[find_package]

Based on your description, you have to add the search path to the list of paths that cmake inspects when it tries to find a package by calling [find_package]

如果要支持用于链接libcurl共享库(libcurl.so)的用户定义路径，则可以通过cmake命令通过CMAKE_PREFIX_PATH传递它

If you want to support user-defined path for linking libcurl shared object (libcurl.so), you can pass it via CMAKE_PREFIX_PATH from cmake command

用法示例

cmake -DCMAKE_PREFIX_PATH=<full_path_where_curl_is_installed> -B build -S .

假定构建工件位于主项目的build子目录(存在顶级CMakeLists.txt的子目录)中，并且使用的cmake版本为 3.16 +

Assuming that the build artifacts will be at build sub-directory of main project (where the top-level CMakeLists.txt exists) and used cmake version is 3.16+

如果要将信息嵌入到自己的CMakeLists.txt中，则可以启用curl的路径作为搜索路径

If you want to embed the information at your own CMakeLists.txt, you can enable the path for curl as search path

用法示例

在您的CMakeLists.txt中，在为CURL调用find_package之前添加以下行

in your CMakeLists.txt, add the following line before calling find_package for CURL

list(APPEND CMAKE_PREFIX_PATH <full_path_where_curl_is_installed>)

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